We Are Interested in Conducting a Study in Order to Determine

question 85

Multiple Choice

We are interested in conducting a study in order to determine what percentage of voters in a city would vote for the incumbent mayor. What is the minimum size sample needed to estimate the population proportion with a margin of error not exceeding 4% at 95% confidence?

• A)625
• B)626
• C)600
• D)601

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Definitions:

Population Parameters

Quantitative characteristics of a population, such as mean or standard deviation, that are usually unknown and estimated from samples.

Nonparametric Methods

Statistical methods that are not based on parameterized families of probability distributions and are used when data doesn't fit standard distributions.

Ordinal Data

A type of categorical data where the categories have a natural order or sequence but the intervals between the categories are not necessarily uniform.

Wilcoxon Rank Sum Test

A nonparametric statistical test that compares two independent samples to assess whether their population mean ranks differ.